This study aimed to investigate the influence of the nanotechnology product EF-TABS on the energy parameters of the engine KAMA KM178, in variable speed and load regimes, realized in the laboratory of motors, test bench MEC. ENERG. 398-UNT. The most outstanding results obtained from this experiment were: 1. The specific fuel consumption (ge) of the KAMA KM178 engine reveals that when mixing Diesel B5 + EF-TABS, in the working area 2520 – 3240 rpm there is a decrease in fuel consumption of 0.56%, working in full load. 2. The behavior of temperatures T. engine, T. exhaust gas, KAMA KM178 engine when mixing the Diésel B5 + EF-TABS in the working zone regime 2520 -3240 rpm gives a lower level of temperature. As a result, the life cycle of the engine and its components is increased and there are fewer emissions of pollutiing gases. 3. Decreases the excess air coefficient un the working zon...